// model that works with Yahoo Search API
dojo.declare("dojox.grid.data.yahooSearch", dojox.grid.data.dynamic, 
function(inFields, inData) {
this.rowsPerPage = 20;
this.fieldNames = [];
for (var i=0, f; (f=inFields[i]); i++)
this.fieldNames.push(f.name);
}, {
clearData: function() {
turbo.widgets.TurboGrid.data.dynamic.prototype.clearData.apply(this, arguments);
},
// server send / receive
encodeParam: function(inName, inValue) {
return turbo.printf('&%s=%s', inName, inValue);
},
getParams: function(inParams) {
var url = this.url;
url += '?appid=turboajax';
inParams = inParams || {};
inParams.output = 'json';
inParams.results = this.rowsPerPage;
inParams.query = turbo.$('searchInput').value.replace(/ /g, '+');
for (var i in inParams)
if (inParams[i] != undefined)
url += this.encodeParam(i, inParams[i]);
return url;
},
send: function(inAsync, inParams, inOnReceive, inOnError) {
var p = this.getParams(inParams);
dojo.io.bind({
url: "support/proxy.php",
method: "post",
content: {url: p },
contentType: "application/x-www-form-urlencoded; charset=utf-8",
mimetype: 'text/json',
sync: !inAsync,
load: turbo.bindArgs(this, "receive", inOnReceive, inOnError),
error: turbo.bindArgs(this, "error", inOnError) 
});
this.onSend(inParams);
},
receive: function(inOnReceive, inOnError, inEvt, inData) {
try {
inData = inData.ResultSet;
inOnReceive(inData);
this.onReceive(inData);
} catch(e) {
if (inOnError)
inOnError(inData);
}
},
error: function(inOnError, inTyp, inErr) {
var m = 'io error: ' + inErr.message;
alert(m);
if (inOnError)
inOnError(m);
},
fetchRowCount: function(inCallback) {
this.send(true, inCallback );
},
// request data 
requestRows: function(inRowIndex, inCount){
inRowIndex = (inRowIndex == undefined ? 0 : inRowIndex);
var params = { 
start: inRowIndex + 1
}
this.send(true, params, turbo.bindArgs(this, this.processRows));
},
// server callbacks
processRows: function(inData) {
for (var i=0, l=inData.totalResultsReturned, s=inData.firstResultPosition; i<l; i++) {
this.setRow(inData.Result[i], s - 1 + i);
}
// yahoo says 1000 is max results to return
var c = Math.min(1000, inData.totalResultsAvailable);
if (this.count != c) {
this.setRowCount(c);
this.allChange();
this.onInitializeData(inData);
}
},
getDatum: function(inRowIndex, inColIndex) {
var row = this.getRow(inRowIndex);
var field = this.fields.get(inColIndex);
return (inColIndex == undefined ? row : (row ? row[field.name] : field.na));
},
// events
onInitializeData: turbo.nop,
onSend: turbo.nop,
onReceive: turbo.nop
});

// report
modelChange = function() {
var n = turbo.$('rowCount');
if (n)
n.innerHTML = turbo.printf('about %s row(s)', model.count);
}


// some data formatters
formatLink = function(inData, inRowIndex) {
if (!inData[0] || !inData[1])
return '&nbsp;';
return turbo.supplant('<a target="_blank" href="{href}">{text}</a>', {href: inData[0], text: inData[1] });
};

formatImage = function(inData, inRowIndex) {
if (!inData[0] || !inData[1])
return '&nbsp;';
var o = {
href: inData[0], 
src: inData[1].Url,
width: inData[1].Width,
height: inData[1].Height
}
return turbo.supplant('<a href="{href}" target="_blank"><img border=0 src="{src}" width="{width}" height="{height}"></a>', o);
};

formatDate = function(inDatum, inRowIndex) {
if (inDatum == '')
return '&nbsp;';
var d = new Date(inDatum * 1000);
return turbo.printf('%s/%s/%s', d.getMonth(), d.getDate(), d.getFullYear());
};

formatDimensions = function(inData, inRowIndex) {
if (!inData[0] || !inData[1])
return '&nbsp;';
return inData[0] + ' x ' + inData[1];
}
